As soon as people started looking at the genders separately, they realised there were differences, but by that stage there was 15-20 years of research data out there that most people had never actually read in detail and so didn’t realise it had these problems. They weren’t deliberate – they came about because people made an assumption that sex was a variable they could ignore. They were wrong.
Probably not – but you’re confusing two different things here. What you seem to be describing are schools where the cane was never used, or was used extremely rarely
No, I’m describing schools where the cane was used quite frequently, supposedly as a “standard” punishment for the type of offences I described. In reality though, it wasn’t the usual punishment for those offences because half the offenders were the “wrong” sex.